The tension device can smoothly realize amplitude of variation of the crane jib and effectively relieve the deflection of the crane jib.
所述拉紧装置能够顺利地实现臂架的变幅，并能够有效减轻臂架的挠度；
Acting like a crane, the jib often starts the camera up high and swoops in below to the scene.
开始拍摄时，摄像机时常像鹤的头一样，高高在上，然后快速俯冲下来，进入电影的场景中拍摄。
Jib crane: in circles over the operation site and more for open-air handling and installation work.
臂架型起重机：可在圆形场地及其上空作业，多用于露天装卸及安装等工作。
The reliability analysis of the box type telescopic jib plays a key role in the railway crane design.
箱形伸缩式吊臂的可靠性分析是铁路起重机设计中的重要部分。
In chapter 4, in order to ascertain its inherent eigenvalue and corresponding main vibration, modal analysis is first implemented for the jib structure of deck crane.
在第4章中先对甲板吊臂架结构进行模态分析，确定结构的固有频率和相应的主振型。
Coleman LongRanger articulated jib crane expands the applications that a jib crane can be used for.
装有旋臂起重机的科尔曼测距仪扩大了旋臂起重机的应用范围。
Chain blocks, crane - use electrical saddles, crane - use manual saddles, jib cranes, railroad maintenance equipment.
链动滑轮，吊车专用电动滑板，吊车专用手动滑板，悬臂起重机，铁路养路器械。
A new-type quayside container crane with jib-bridge luffing system as the main working part is brought out.
提出一种以臂桥架变幅系统为主要工作机构的岸边集装箱起重机。
Overbrace jib crane with adjustable hoist. Swing range can be shown.
带有可调节提升机的上支撑动臂起重机。可显示旋转范围。
Underbrace jib crane with adjustable hoist. Swing range can be shown.
带有可调节绞车的下支撑悬臂起重机。可显示旋转范围。
Fuzzy Reliability Analysis of Railway Crane Telescopic Jib under Stochastic Load.
随机载荷作用下铁路起重机伸缩臂模糊可靠性分析。
Reaserch the relations between at luffing course of horizontal movement and jib system organization's static stressing, as well as to improve the analyses means of design software of these same crane.
探寻物品在变幅过程中水平移动与臂架系统结构静态受力之间的关系，研究臂架自重平衡系统的设计与臂架系统动力响应之间的关系以及对改善该类门机的设计软件的分析手段。
Reaserch the relations between at luffing course of horizontal movement and jib system organization's static stressing, as well as to improve the analyses means of design software of these same crane.
探寻物品在变幅过程中水平移动与臂架系统结构静态受力之间的关系，研究臂架自重平衡系统的设计与臂架系统动力响应之间的关系以及对改善该类门机的设计软件的分析手段。
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